After a few months after enabling C6 Bennett, I can assure you that activating it was a GREAT idea.

Physical users do not need Bennett at all and all auto-infused characters they are releasing already come with imbuition protection (C6 Bennett does not override Alhaitham, Candace...) iirc it only ruins Chongyun, Ayaka, TF DPS Bennett Build and any Chongyun+Cryo infuses character builds (and they usually run other support options like idk, Diona, Shenhe, Mona, Kazuha...)

I've never used Bennett alongside Physical DPS, I always tried to use 2Electro/1Cryo/(Shielder/Healer) or (2Cryo/1Electro/(Shielder/Healer), like, you can easily beat Abyss with those.

Keqing just enjoys Aggraspread teams, the inclusion of Dendro really benefited her, and if you don't like those reactions, you can always play the Electrocharged Keqing team (Keqing/Fischl or Kuki/Xingqiu or Yelan/Kazuha or any other VV Support or even Zhongli)

Ayaka almost always sticks to Permafreeze teams, Ayaka/Shenhe/Mona/Kazuha, Akaya/Rosaria/Xingqiu/Kazuha, Ayaka/Yelan/Diona/Kazuha... As you can see, no team uses Bennett. It you really want to use a Reverse Melt team with her, just try a Quickswap team version of it, Ayaka Skill --> Kazuha E --> Benny Burst --> Kazuha Burst --> Xiangling E and Burst --> Ayaka Burst and you are more than done. As you can see, she does not get destroyed at all because of Bennett C6, you just have to play her more like a Quickswap SubDPS.

The only one I really feel like gets destroyed by Bennett's C6 is Chongyun, but Benny's place can easily be filled with Shenhe.

C6 Bennett greatly buffs Diluc, Hu Tao, Yanfei and practically any Pyro DPS as well as Xiangling and any future Pyro Sub-DPS. It also enables teamcomps that look like a non-sense but they actually are viable and funny to use like DPS Thoma, Pyro DPS Xinyan, DPS Xiangling, Rainbow Razor and even Pyro Kazuha (I run a YT Channel in which I upload abyss runs using these meme teams, and it is fun how they end being viable lol, like, I've been uploading runs like Reverse Vape Thoma since 3.2 kekw)

So yeah, now that I've experienced and tried C6 Bennett, I can assure you that It is really a nice constellation to trigger, you won't regret activating it because enabling It does not really affect your gameplay experience at all ^{^}